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r-ruslan [8.4K]
3 years ago
8

What is the best way to emphasize a point when giving a speech?

Biology
2 answers:
SSSSS [86.1K]3 years ago
8 0
The answer should be A
ehidna [41]3 years ago
3 0
The answer is a I think
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Which of the following is a normal process of photosynthesis that could not occur if all reaction centers were inactivated by a
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Answer:

A. donation of excited electrons by chlorophyll a to a primary electron acceptor

Explanation:

Photosystems are structures located at the thylakoid membrane that act to harvest energy light in order to convert it into chemical energy. Each photosystem is composed of a light-harvesting complex and a core complex, which in turn is composed of a reaction center. The photosynthetic reaction centers are multi-protein complexes that use light energy to catalyze the electron transfer across the chloroplast thylakoid membrane against a thermodynamic gradient. Moreover, antenna pigments are pigments that capture the energy from photons in order to transfer energy to other pigments in the photosystem (e.g., chlorophyll B and carotenes are antenna pigments, whereas chlorophyll A is the core pigment). Light energy absorbed by antenna pigments in the photosystems is transferred to the reaction center chlorophyll A molecules, thereby exiting electrons in the reaction center. A reaction center consists of two chlorophyll A molecules, which donate electrons to the primary electron acceptor.

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Explanation:

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based on the data for the groups of cells cultured with 0.1 serum (groups 3 to 7), identify which of the four proteins tested do
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p18, p21 and p27

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Four proteins have been obstructed in this investigation and the concentration of DNA synthesis was evaluated in various cell cultures and seeing which proteins could play a significant role in the cell cycle.

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The answer is: Carbon dioxide and water released by cellular respiration are used in photosynthesis.

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